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Finding the Fourth Proportional to 135,640.10, 203,492.55 and 65,461.70

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Solution

The fourth proportional to 135,640.10, 203,492.55 and 65,461.70 is: 98,208.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,640.10 : 203,492.55 = 65,461.70 : x
  2. Step 2: Convert to fraction form
    135,640.10/203,492.55 = 65,461.70/x
  3. Step 3: Cross multiply
    135,640.10x = 203,492.55 × 65,461.70
  4. Step 4: Simplify right side
    135,640.10x = 13,320,968,260.34
  5. Step 5: Solve for x
    x = 13,320,968,260.34/135,640.10
  6. Step 6: Final answer
    x = 98,208.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.